System and method for injecting compound into utility furnace
Inactive Publication Date: 2011-06-09
POWER & CONTROL SOLUTIONS
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- Abstract
- Description
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Benefits of technology
In another exemplary embodiment, a system comprises a fluid supply configured to deliver a fluid; a valve connected to the fluid supply wherein the valve is operable to control the fluid from the fluid supply; a feed tube configured to connect to the valve and transport the fluid; a delivery device configured to connect to the feed tube and configured to eject the fluid into a utility furnace; a solid agent capable of improving the efficiency of the utility furnace; a hopper configured to hold a quantity of the solid agent; an auger connected to the hopper and operable to transfer solid agent from the hopper; and a nozzle operable to receive the solid agent from the auger and combine the solid agent with the fluid supply wherein, the nozzle is configured to be removably connected to the valve.
Problems solved by technology
Common issues associated between these various industries include the handling of the by products created by the combusted fuel.
Running with added fuel in turn increases deposition of byproducts of fuel burning and also increases the chances of the tubes failure by overheating.
This eventually results in shutting down of the furnace for repairs.
However under suboptimal conditions the ash melts due to reaching its fusion temperature and results in the formation of slag.
Sootblowers are less effective at removing the slag.
The major problem with the formation of slag is that it insulates the elements, thus requiring the furnace to burn at a hotter temperature to create the same increase in water temperature.
Excessive ash deposits on a coal-fired boiler's heat transfer surfaces will reduce its efficiency, and in extreme cases a boiler can be shut down by ash-related problems.
Slagging incidents are a heavy drag on the global utility industry due to reduced power generation and equipment maintenance.
These factors have led to coal-fired plants being operated under unusual loads.
This change in operation has altered the effects of boiler slagging.
The cofiring of other fuels with coal, especially biomass, represents a large challenge to utility furnace operation.
The ash chemistry of these alternative fuels is often very different to that of the coals and has given rise to serious problems.
The complex interaction between a boiler's operating conditions and the fuel chemistry makes the prediction of slagging difficult.
The new generation of pulverized coal fired plant, designed for high efficiency through the use of high steam temperatures and pressures, present further challenges with respect to ash slagging and fouling.
These techniques are less than satisfactory, and neither of these solutions address issues of pollution.
While the problems and limitations of utility furnaces are clear, there are few solutions.
While the specific compounds vary across the board depending on the specific chemistry of the fuel and problem to be addressed, one uniform problem exists, there is no adequate delivery mechanism to inject the compounds into targeted spots in the furnace.
Method used
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In accordance with an exemplary embodiment of the present invention, systems, devices, and methods are provided, for among other things, facilitating the injection of various compounds into a utility furnace. The following descriptions are not intended as a limitation on the use or applicability of the invention, but instead, are provided merely to enable a full and complete description of exemplary embodiments.
In accordance with an exemplary embodiment, with reference to FIG. 2, nozzle 200 may have a first side 204, an inlet side to the fluid, and a second side 202, an exit side to the fluid. Nozzle 200 may be variously sized to accommodate the equipment that it mates to. In one exemplary embodiment nozzle 200 may be approximately 1-3 inches in diameter at the outlet to accommodate common feed tube sizes used with utility furnaces. However, nozzle 200 can be sized to fit various components. In accordance with one embodiment, nozzle 200 may have a varying cross-section between the f...
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This disclosure may relate generally to systems, devices, and methods for a injecting a solid compound in line with a pressurized fluid, typically through a sootblower, to be delivered to targeted areas on the inside of a utility furnace.
Description
FIELD OF INVENTIONThe subject of this disclosure may relate generally to systems, devices, and methods for facilitating the injection of various compounds into a utility furnace.BACKGROUND OF THE INVENTIONUtility furnaces are used in various industries for a variety of different purposes. Common issues associated between these various industries include the handling of the by products created by the combusted fuel. These byproducts can decrease the utility furnace efficiency and pose other pollution problems.In one example, the pulverized coal, used in various types of boilers, burns in a combustion chamber. The hot gaseous combustion products then follow various paths, giving up their heat to steam, water and combustion air before exhausting through a stack. The boiler is constructed mainly of interconnected elements such as cylinders such as the super heater tubes, water walls, various larger diameter headers, and large drums. Water and steam circulate in these elements, often by ...
Claims
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Login to View More IPC IPC(8): F28G9/00F28G3/16F22B37/54
CPCF22B37/54F28G1/16F28G3/16F22B37/545F28G9/00
InventorABEYTA, CHRISTOPHER L.
OwnerPOWER & CONTROL SOLUTIONS